CVE-2025-12346: maxsite cms Access Control Flaw

Description

A vulnerability was detected in MaxSite CMS up to 109. This vulnerability affects unknown code of the file application/maxsite/admin/plugins/auto_post/uploads-require-maxsite.php of the component HTTP Header Handler. Performing manipulation of the argument X-Requested-FileName/X-Requested-FileUpDir results in unrestricted upload. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-284 CWE-284

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
max-3000	maxsite_cms	< 109

References

Exploits

https://note-hxlab.wetolink.com/share/8QmDZCddHvyR

Other References

https://vuldb.com/?ctiid.330136 https://vuldb.com/?id.330136 https://vuldb.com/?submit.674551

Frequently Asked Questions

What is CVE-2025-12346? +

A vulnerability was detected in MaxSite CMS up to 109. This vulnerability affects unknown code of the file application/maxsite/admin/plugins/auto_post/uploads-require-maxsite.php of the component HTTP Header Handler. Performing manipulation of the argument X-Requested-FileName/X-Requested-FileUpDir results in unrestricted upload. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2025-12346? +

CVE-2025-12346 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-12346? +

CVE-2025-12346 affects products from max-3000, specifically: maxsite_cms. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-12346? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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